diff options
| author |   YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2006-04-18 14:47:44 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-04-18 15:57:52 -0700 |
| commit | e5d25a90886d62d88fdd7cd5c3375f4fe436be64 (patch) | |
| tree | 677a7aa9816db94dfae91e6cb7f35864e47dc6d4 /net/ipv6 | |
| parent | [IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull(). (diff) | |
| download | linux-dev-e5d25a90886d62d88fdd7cd5c3375f4fe436be64.tar.xz linux-dev-e5d25a90886d62d88fdd7cd5c3375f4fe436be64.zip | |
[IPV6] XFRM: Fix decoding session with preceding extension header(s).
We did not correctly decode session with preceding extension
header(s). This was because we had already pulled preceding
headers, skb->nh.raw + 40 + 1 - skb->data was minus, and
pskb_may_pull() failed.
We now have IP6CB(skb)->nhoff and skb->h.raw, and we can
start parsing / decoding upper layer protocol from current
position.
Tracked down by Noriaki TAKAMIYA <takamiya@po.ntts.co.jp>
and tested by Kazunori Miyazawa <kazunori@miyazawa.org>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/xfrm6_policy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index 588922bd9264..88c840f1beb6 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -191,10 +191,10 @@ error: static inline void _decode_session6(struct sk_buff *skb, struct flowi *fl) { - u16 offset = sizeof(struct ipv6hdr); + u16 offset = skb->h.raw - skb->nh.raw; struct ipv6hdr *hdr = skb->nh.ipv6h; struct ipv6_opt_hdr *exthdr; - u8 nexthdr = skb->nh.ipv6h->nexthdr; + u8 nexthdr = skb->nh.raw[IP6CB(skb)->nhoff]; memset(fl, 0, sizeof(struct flowi)); ipv6_addr_copy(&fl->fl6_dst, &hdr->daddr); |